diff options
Diffstat (limited to 'networking/wget.c')
-rw-r--r-- | networking/wget.c | 832 |
1 files changed, 832 insertions, 0 deletions
diff --git a/networking/wget.c b/networking/wget.c new file mode 100644 index 000000000..028e18c73 --- /dev/null +++ b/networking/wget.c @@ -0,0 +1,832 @@ +/* vi: set sw=4 ts=4: */ +/* + * wget - retrieve a file using HTTP or FTP + * + * Chip Rosenthal Covad Communications <chip@laserlink.net> + * + */ + +/* We want libc to give us xxx64 functions also */ +/* http://www.unix.org/version2/whatsnew/lfs20mar.html */ +#define _LARGEFILE64_SOURCE 1 + +#include "busybox.h" +#include <getopt.h> /* for struct option */ + +struct host_info { + // May be used if we ever will want to free() all xstrdup()s... + /* char *allocated; */ + char *host; + int port; + char *path; + int is_ftp; + char *user; +}; + +static void parse_url(char *url, struct host_info *h); +static FILE *open_socket(struct sockaddr_in *s_in); +static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc); +static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf); + +/* Globals (can be accessed from signal handlers */ +static off_t content_len; /* Content-length of the file */ +static off_t beg_range; /* Range at which continue begins */ +#if ENABLE_FEATURE_WGET_STATUSBAR +static off_t transferred; /* Number of bytes transferred so far */ +#endif +static int chunked; /* chunked transfer encoding */ +#if ENABLE_FEATURE_WGET_STATUSBAR +static void progressmeter(int flag); +static char *curfile; /* Name of current file being transferred */ +static struct timeval start; /* Time a transfer started */ +enum { + STALLTIME = 5 /* Seconds when xfer considered "stalled" */ +}; +#else +static void progressmeter(int flag) {} +#endif + +/* Read NMEMB elements of SIZE bytes into PTR from STREAM. Returns the + * number of elements read, and a short count if an eof or non-interrupt + * error is encountered. */ +static size_t safe_fread(void *ptr, size_t size, size_t nmemb, FILE *stream) +{ + size_t ret = 0; + + do { + clearerr(stream); + ret += fread((char *)ptr + (ret * size), size, nmemb - ret, stream); + } while (ret < nmemb && ferror(stream) && errno == EINTR); + + return ret; +} + +/* Read a line or SIZE - 1 bytes into S, whichever is less, from STREAM. + * Returns S, or NULL if an eof or non-interrupt error is encountered. */ +static char *safe_fgets(char *s, int size, FILE *stream) +{ + char *ret; + + do { + clearerr(stream); + ret = fgets(s, size, stream); + } while (ret == NULL && ferror(stream) && errno == EINTR); + + return ret; +} + +#if ENABLE_FEATURE_WGET_AUTHENTICATION +/* + * Base64-encode character string and return the string. + */ +static char *base64enc(unsigned char *p, char *buf, int len) +{ + bb_uuencode(p, buf, len, bb_uuenc_tbl_base64); + return buf; +} +#endif + +int wget_main(int argc, char **argv) +{ + char buf[512]; + struct host_info server, target; + struct sockaddr_in s_in; + int n, status; + int port; + int try = 5; + unsigned opt; + char *s; + char *proxy = 0; + char *dir_prefix = NULL; +#if ENABLE_FEATURE_WGET_LONG_OPTIONS + char *extra_headers = NULL; + llist_t *headers_llist = NULL; +#endif + + /* server.allocated = target.allocated = NULL; */ + + FILE *sfp = NULL; /* socket to web/ftp server */ + FILE *dfp = NULL; /* socket to ftp server (data) */ + char *fname_out = NULL; /* where to direct output (-O) */ + int got_clen = 0; /* got content-length: from server */ + int output_fd = -1; + int use_proxy = 1; /* Use proxies if env vars are set */ + const char *proxy_flag = "on"; /* Use proxies if env vars are set */ + const char *user_agent = "Wget";/* Content of the "User-Agent" header field */ + + /* + * Crack command line. + */ + enum { + WGET_OPT_CONTINUE = 0x1, + WGET_OPT_QUIET = 0x2, + WGET_OPT_OUTNAME = 0x4, + WGET_OPT_PREFIX = 0x8, + WGET_OPT_PROXY = 0x10, + WGET_OPT_USER_AGENT = 0x20, + WGET_OPT_PASSIVE = 0x40, + WGET_OPT_HEADER = 0x80, + }; +#if ENABLE_FEATURE_WGET_LONG_OPTIONS + static const struct option wget_long_options[] = { + // name, has_arg, flag, val + { "continue", no_argument, NULL, 'c' }, + { "quiet", no_argument, NULL, 'q' }, + { "output-document", required_argument, NULL, 'O' }, + { "directory-prefix", required_argument, NULL, 'P' }, + { "proxy", required_argument, NULL, 'Y' }, + { "user-agent", required_argument, NULL, 'U' }, + { "passive-ftp", no_argument, NULL, 0xff }, + { "header", required_argument, NULL, 0xfe }, + { 0, 0, 0, 0 } + }; + applet_long_options = wget_long_options; +#endif + opt_complementary = "-1" USE_FEATURE_WGET_LONG_OPTIONS(":\xfe::"); + opt = getopt32(argc, argv, "cqO:P:Y:U:", + &fname_out, &dir_prefix, + &proxy_flag, &user_agent + USE_FEATURE_WGET_LONG_OPTIONS(, &headers_llist) + ); + if (strcmp(proxy_flag, "off") == 0) { + /* Use the proxy if necessary. */ + use_proxy = 0; + } +#if ENABLE_FEATURE_WGET_LONG_OPTIONS + if (headers_llist) { + int size = 1; + char *cp; + llist_t *ll = headers_llist = rev_llist(headers_llist); + while (ll) { + size += strlen(ll->data) + 2; + ll = ll->link; + } + extra_headers = cp = xmalloc(size); + while (headers_llist) { + cp += sprintf(cp, "%s\r\n", headers_llist->data); + headers_llist = headers_llist->link; + } + } +#endif + + parse_url(argv[optind], &target); + server.host = target.host; + server.port = target.port; + + /* + * Use the proxy if necessary. + */ + if (use_proxy) { + proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy"); + if (proxy && *proxy) { + parse_url(proxy, &server); + } else { + use_proxy = 0; + } + } + + /* Guess an output filename */ + if (!fname_out) { + // Dirty hack. Needed because bb_get_last_path_component + // will destroy trailing / by storing '\0' in last byte! + if (*target.path && target.path[strlen(target.path)-1] != '/') { + fname_out = +#if ENABLE_FEATURE_WGET_STATUSBAR + curfile = +#endif + bb_get_last_path_component(target.path); + } + if (!fname_out || !fname_out[0]) { + fname_out = +#if ENABLE_FEATURE_WGET_STATUSBAR + curfile = +#endif + "index.html"; + } + if (dir_prefix != NULL) + fname_out = concat_path_file(dir_prefix, fname_out); +#if ENABLE_FEATURE_WGET_STATUSBAR + } else { + curfile = bb_get_last_path_component(fname_out); +#endif + } + /* Impossible? + if ((opt & WGET_OPT_CONTINUE) && !fname_out) + bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)"); */ + + /* + * Determine where to start transfer. + */ + if (fname_out[0] == '-' && !fname_out[1]) { + output_fd = 1; + opt &= ~WGET_OPT_CONTINUE; + } + if (opt & WGET_OPT_CONTINUE) { + output_fd = open(fname_out, O_WRONLY); + if (output_fd >= 0) { + beg_range = xlseek(output_fd, 0, SEEK_END); + } + /* File doesn't exist. We do not create file here yet. + We are not sure it exists on remove side */ + } + + /* We want to do exactly _one_ DNS lookup, since some + * sites (i.e. ftp.us.debian.org) use round-robin DNS + * and we want to connect to only one IP... */ + bb_lookup_host(&s_in, server.host); + s_in.sin_port = server.port; + if (!(opt & WGET_OPT_QUIET)) { + fprintf(stderr, "Connecting to %s[%s]:%d\n", + server.host, inet_ntoa(s_in.sin_addr), ntohs(server.port)); + } + + if (use_proxy || !target.is_ftp) { + /* + * HTTP session + */ + do { + got_clen = chunked = 0; + + if (!--try) + bb_error_msg_and_die("too many redirections"); + + /* + * Open socket to http server + */ + if (sfp) fclose(sfp); + sfp = open_socket(&s_in); + + /* + * Send HTTP request. + */ + if (use_proxy) { + const char *format = "GET %stp://%s:%d/%s HTTP/1.1\r\n"; +#if ENABLE_FEATURE_WGET_IP6_LITERAL + if (strchr(target.host, ':')) + format = "GET %stp://[%s]:%d/%s HTTP/1.1\r\n"; +#endif + fprintf(sfp, format, + target.is_ftp ? "f" : "ht", target.host, + ntohs(target.port), target.path); + } else { + fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path); + } + + fprintf(sfp, "Host: %s\r\nUser-Agent: %s\r\n", target.host, + user_agent); + +#if ENABLE_FEATURE_WGET_AUTHENTICATION + if (target.user) { + fprintf(sfp, "Authorization: Basic %s\r\n", + base64enc((unsigned char*)target.user, buf, sizeof(buf))); + } + if (use_proxy && server.user) { + fprintf(sfp, "Proxy-Authorization: Basic %s\r\n", + base64enc((unsigned char*)server.user, buf, sizeof(buf))); + } +#endif + + if (beg_range) + fprintf(sfp, "Range: bytes=%"OFF_FMT"d-\r\n", beg_range); +#if ENABLE_FEATURE_WGET_LONG_OPTIONS + if (extra_headers) + fputs(extra_headers, sfp); +#endif + fprintf(sfp, "Connection: close\r\n\r\n"); + + /* + * Retrieve HTTP response line and check for "200" status code. + */ + read_response: + if (fgets(buf, sizeof(buf), sfp) == NULL) + bb_error_msg_and_die("no response from server"); + + s = buf; + while (*s != '\0' && !isspace(*s)) ++s; + s = skip_whitespace(s); + // FIXME: no error check + // xatou wouldn't work: "200 OK" + status = atoi(s); + switch (status) { + case 0: + case 100: + while (gethdr(buf, sizeof(buf), sfp, &n) != NULL) + /* eat all remaining headers */; + goto read_response; + case 200: + break; + case 300: /* redirection */ + case 301: + case 302: + case 303: + break; + case 206: + if (beg_range) + break; + /*FALLTHRU*/ + default: + /* Show first line only and kill any ESC tricks */ + buf[strcspn(buf, "\n\r\x1b")] = '\0'; + bb_error_msg_and_die("server returned error: %s", buf); + } + + /* + * Retrieve HTTP headers. + */ + while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) { + if (strcasecmp(buf, "content-length") == 0) { + content_len = BB_STRTOOFF(s, NULL, 10); + if (errno || content_len < 0) { + bb_error_msg_and_die("content-length %s is garbage", s); + } + got_clen = 1; + continue; + } + if (strcasecmp(buf, "transfer-encoding") == 0) { + if (strcasecmp(s, "chunked") != 0) + bb_error_msg_and_die("server wants to do %s transfer encoding", s); + chunked = got_clen = 1; + } + if (strcasecmp(buf, "location") == 0) { + if (s[0] == '/') + /* free(target.allocated); */ + target.path = /* target.allocated = */ xstrdup(s+1); + else { + parse_url(s, &target); + if (use_proxy == 0) { + server.host = target.host; + server.port = target.port; + } + bb_lookup_host(&s_in, server.host); + s_in.sin_port = server.port; + break; + } + } + } + } while(status >= 300); + + dfp = sfp; + + } else { + + /* + * FTP session + */ + if (!target.user) + target.user = xstrdup("anonymous:busybox@"); + + sfp = open_socket(&s_in); + if (ftpcmd(NULL, NULL, sfp, buf) != 220) + bb_error_msg_and_die("%s", buf+4); + + /* + * Splitting username:password pair, + * trying to log in + */ + s = strchr(target.user, ':'); + if (s) + *(s++) = '\0'; + switch (ftpcmd("USER ", target.user, sfp, buf)) { + case 230: + break; + case 331: + if (ftpcmd("PASS ", s, sfp, buf) == 230) + break; + /* FALLTHRU (failed login) */ + default: + bb_error_msg_and_die("ftp login: %s", buf+4); + } + + ftpcmd("TYPE I", NULL, sfp, buf); + + /* + * Querying file size + */ + if (ftpcmd("SIZE ", target.path, sfp, buf) == 213) { + content_len = BB_STRTOOFF(buf+4, NULL, 10); + if (errno || content_len < 0) { + bb_error_msg_and_die("SIZE value is garbage"); + } + got_clen = 1; + } + + /* + * Entering passive mode + */ + if (ftpcmd("PASV", NULL, sfp, buf) != 227) { + pasv_error: + bb_error_msg_and_die("bad response to %s: %s", "PASV", buf); + } + // Response is "227 garbageN1,N2,N3,N4,P1,P2[)garbage] + // Server's IP is N1.N2.N3.N4 (we ignore it) + // Server's port for data connection is P1*256+P2 + s = strrchr(buf, ')'); + if (s) s[0] = '\0'; + s = strrchr(buf, ','); + if (!s) goto pasv_error; + port = xatou_range(s+1, 0, 255); + *s = '\0'; + s = strrchr(buf, ','); + if (!s) goto pasv_error; + port += xatou_range(s+1, 0, 255) * 256; + s_in.sin_port = htons(port); + dfp = open_socket(&s_in); + + if (beg_range) { + sprintf(buf, "REST %"OFF_FMT"d", beg_range); + if (ftpcmd(buf, NULL, sfp, buf) == 350) + content_len -= beg_range; + } + + if (ftpcmd("RETR ", target.path, sfp, buf) > 150) + bb_error_msg_and_die("bad response to RETR: %s", buf); + } + + + /* + * Retrieve file + */ + if (chunked) { + fgets(buf, sizeof(buf), dfp); + content_len = STRTOOFF(buf, NULL, 16); + /* FIXME: error check?? */ + } + + /* Do it before progressmeter (want to have nice error message) */ + if (output_fd < 0) + output_fd = xopen(fname_out, + O_WRONLY|O_CREAT|O_EXCL|O_TRUNC); + + if (!(opt & WGET_OPT_QUIET)) + progressmeter(-1); + + do { + while (content_len > 0 || !got_clen) { + unsigned rdsz = sizeof(buf); + if (content_len < sizeof(buf) && (chunked || got_clen)) + rdsz = (unsigned)content_len; + n = safe_fread(buf, 1, rdsz, dfp); + if (n <= 0) + break; + if (full_write(output_fd, buf, n) != n) { + bb_perror_msg_and_die(bb_msg_write_error); + } +#if ENABLE_FEATURE_WGET_STATUSBAR + transferred += n; +#endif + if (got_clen) { + content_len -= n; + } + } + + if (chunked) { + safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */ + safe_fgets(buf, sizeof(buf), dfp); + content_len = STRTOOFF(buf, NULL, 16); + /* FIXME: error check? */ + if (content_len == 0) { + chunked = 0; /* all done! */ + } + } + + if (n == 0 && ferror(dfp)) { + bb_perror_msg_and_die(bb_msg_read_error); + } + } while (chunked); + + if (!(opt & WGET_OPT_QUIET)) + progressmeter(1); + + if ((use_proxy == 0) && target.is_ftp) { + fclose(dfp); + if (ftpcmd(NULL, NULL, sfp, buf) != 226) + bb_error_msg_and_die("ftp error: %s", buf+4); + ftpcmd("QUIT", NULL, sfp, buf); + } + exit(EXIT_SUCCESS); +} + + +static void parse_url(char *src_url, struct host_info *h) +{ + char *url, *p, *cp, *sp, *up, *pp; + + /* h->allocated = */ url = xstrdup(src_url); + + if (strncmp(url, "http://", 7) == 0) { + h->port = bb_lookup_port("http", "tcp", 80); + h->host = url + 7; + h->is_ftp = 0; + } else if (strncmp(url, "ftp://", 6) == 0) { + h->port = bb_lookup_port("ftp", "tcp", 21); + h->host = url + 6; + h->is_ftp = 1; + } else + bb_error_msg_and_die("not an http or ftp url: %s", url); + + // FYI: + // "Real" wget 'http://busybox.net?var=a/b' sends this request: + // 'GET /?var=a/b HTTP 1.0' + // and saves 'index.html?var=a%2Fb' (we save 'b') + // wget 'http://busybox.net?login=john@doe': + // request: 'GET /?login=john@doe HTTP/1.0' + // saves: 'index.html?login=john@doe' (we save '?login=john@doe') + // wget 'http://busybox.net#test/test': + // request: 'GET / HTTP/1.0' + // saves: 'index.html' (we save 'test') + // + // We also don't add unique .N suffix if file exists... + sp = strchr(h->host, '/'); + p = strchr(h->host, '?'); if (!sp || (p && sp > p)) sp = p; + p = strchr(h->host, '#'); if (!sp || (p && sp > p)) sp = p; + if (!sp) { + h->path = ""; + } else if (*sp == '/') { + *sp++ = '\0'; + h->path = sp; + } else { // '#' or '?' + // http://busybox.net?login=john@doe is a valid URL + // memmove converts to: + // http:/busybox.nett?login=john@doe... + memmove(h->host-1, h->host, sp - h->host); + h->host--; + sp[-1] = '\0'; + h->path = sp; + } + + up = strrchr(h->host, '@'); + if (up != NULL) { + h->user = h->host; + *up++ = '\0'; + h->host = up; + } else + h->user = NULL; + + pp = h->host; + +#if ENABLE_FEATURE_WGET_IP6_LITERAL + if (h->host[0] == '[') { + char *ep; + + ep = h->host + 1; + while (*ep == ':' || isxdigit(*ep)) + ep++; + if (*ep == ']') { + h->host++; + *ep = '\0'; + pp = ep + 1; + } + } +#endif + + cp = strchr(pp, ':'); + if (cp != NULL) { + *cp++ = '\0'; + h->port = htons(xatou16(cp)); + } +} + + +static FILE *open_socket(struct sockaddr_in *s_in) +{ + FILE *fp; + + /* glibc 2.4 seems to try seeking on it - ??! */ + /* hopefully it understands what ESPIPE means... */ + fp = fdopen(xconnect_tcp_v4(s_in), "r+"); + if (fp == NULL) + bb_perror_msg_and_die("fdopen"); + + return fp; +} + + +static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc) +{ + char *s, *hdrval; + int c; + + *istrunc = 0; + + /* retrieve header line */ + if (fgets(buf, bufsiz, fp) == NULL) + return NULL; + + /* see if we are at the end of the headers */ + for (s = buf; *s == '\r'; ++s) + ; + if (s[0] == '\n') + return NULL; + + /* convert the header name to lower case */ + for (s = buf; isalnum(*s) || *s == '-'; ++s) + *s = tolower(*s); + + /* verify we are at the end of the header name */ + if (*s != ':') + bb_error_msg_and_die("bad header line: %s", buf); + + /* locate the start of the header value */ + for (*s++ = '\0'; *s == ' ' || *s == '\t'; ++s) + ; + hdrval = s; + + /* locate the end of header */ + while (*s != '\0' && *s != '\r' && *s != '\n') + ++s; + + /* end of header found */ + if (*s != '\0') { + *s = '\0'; + return hdrval; + } + + /* Rats! The buffer isn't big enough to hold the entire header value. */ + while (c = getc(fp), c != EOF && c != '\n') + ; + *istrunc = 1; + return hdrval; +} + +static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf) +{ + int result; + if (s1) { + if (!s2) s2 = ""; + fprintf(fp, "%s%s\r\n", s1, s2); + fflush(fp); + } + + do { + char *buf_ptr; + + if (fgets(buf, 510, fp) == NULL) { + bb_perror_msg_and_die("error getting response"); + } + buf_ptr = strstr(buf, "\r\n"); + if (buf_ptr) { + *buf_ptr = '\0'; + } + } while (!isdigit(buf[0]) || buf[3] != ' '); + + buf[3] = '\0'; + result = xatoi_u(buf); + buf[3] = ' '; + return result; +} + +#if ENABLE_FEATURE_WGET_STATUSBAR +/* Stuff below is from BSD rcp util.c, as added to openshh. + * Original copyright notice is retained at the end of this file. + */ +static int +getttywidth(void) +{ + int width; + get_terminal_width_height(0, &width, NULL); + return width; +} + +static void +updateprogressmeter(int ignore) +{ + int save_errno = errno; + + progressmeter(0); + errno = save_errno; +} + +static void alarmtimer(int iwait) +{ + struct itimerval itv; + + itv.it_value.tv_sec = iwait; + itv.it_value.tv_usec = 0; + itv.it_interval = itv.it_value; + setitimer(ITIMER_REAL, &itv, NULL); +} + + +static void +progressmeter(int flag) +{ + static struct timeval lastupdate; + static off_t lastsize, totalsize; + + struct timeval now, td, tvwait; + off_t abbrevsize; + int elapsed, ratio, barlength, i; + char buf[256]; + + if (flag == -1) { /* first call to progressmeter */ + gettimeofday(&start, (struct timezone *) 0); + lastupdate = start; + lastsize = 0; + totalsize = content_len + beg_range; /* as content_len changes.. */ + } + + gettimeofday(&now, (struct timezone *) 0); + ratio = 100; + if (totalsize != 0 && !chunked) { + /* long long helps to have working ETA even if !LFS */ + ratio = (int) (100 * (unsigned long long)(transferred+beg_range) / totalsize); + ratio = MIN(ratio, 100); + } + + fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio); + + barlength = getttywidth() - 51; + if (barlength > 0 && barlength < sizeof(buf)) { + i = barlength * ratio / 100; + memset(buf, '*', i); + memset(buf + i, ' ', barlength - i); + buf[barlength] = '\0'; + fprintf(stderr, "|%s|", buf); + } + i = 0; + abbrevsize = transferred + beg_range; + while (abbrevsize >= 100000) { + i++; + abbrevsize >>= 10; + } + /* see http://en.wikipedia.org/wiki/Tera */ + fprintf(stderr, "%6d %c%c ", (int)abbrevsize, " KMGTPEZY"[i], i?'B':' '); + + timersub(&now, &lastupdate, &tvwait); + if (transferred > lastsize) { + lastupdate = now; + lastsize = transferred; + if (tvwait.tv_sec >= STALLTIME) + timeradd(&start, &tvwait, &start); + tvwait.tv_sec = 0; + } + timersub(&now, &start, &td); + elapsed = td.tv_sec; + + if (tvwait.tv_sec >= STALLTIME) { + fprintf(stderr, " - stalled -"); + } else { + off_t to_download = totalsize - beg_range; + if (transferred <= 0 || elapsed <= 0 || transferred > to_download || chunked) { + fprintf(stderr, "--:--:-- ETA"); + } else { + /* to_download / (transferred/elapsed) - elapsed: */ + int eta = (int) ((unsigned long long)to_download*elapsed/transferred - elapsed); + /* (long long helps to have working ETA even if !LFS) */ + i = eta % 3600; + fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60); + } + } + + if (flag == -1) { /* first call to progressmeter */ + struct sigaction sa; + sa.sa_handler = updateprogressmeter; + sigemptyset(&sa.sa_mask); + sa.sa_flags = SA_RESTART; + sigaction(SIGALRM, &sa, NULL); + alarmtimer(1); + } else if (flag == 1) { /* last call to progressmeter */ + alarmtimer(0); + transferred = 0; + putc('\n', stderr); + } +} +#endif + +/* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff, + * much of which was blatantly stolen from openssh. */ + +/*- + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change + * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change> + * + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id: wget.c,v 1.75 2004/10/08 08:27:40 andersen Exp $ + */ |